Color

#644a7d

#644a7d
hex#644a7d
rgbrgb(100, 74, 125)
hslhsl(271, 26%, 39%)
oklchoklch(0.458 0.086 306.8)
Closest name: Freshly Purpleized (#5c5083)Relative luminance 0.0909

Colors that go with #644a7d

Charcoal, Crimson and Denim lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#637d4a

#4a4a7d · #7d4a7c

#7d644a · #4a7d64

Split-complementary

Open in tool →

#7c7d4a · #4a7d4a

#7d4a4a · #637d4a · #4a7c7d

Contrast

#644a7d as textRatioAAAA largeAAAFix
Aaon white
7.45:1passpasspassPasses AAA — no fix needed.
Aaon black
2.82:1failfailfail
  • AA: use #8868a6 as the text (4.58:1)
  • AAA: use #a78fbd as the text (7.31:1)
  • AA: or shift the background to #c9c9c9 (4.5:1)
  • AAA: or shift the background to #fafafa (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #644a7d as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #644a7d
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #644a7d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/644a7d-b59cc4-c7cb62-2c1f2d-eae9f1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md